On 10/1/70 the DJIA was 838.92. On 4/1/82 it was 811.92. That was a period of high inflation and rising interest rates. The term stagflation was used during that period.
Once the current decline bottoms it will be interesting to see what happens. We don't have the unemployment numbers of the '70s, but that is because of how many have left the workforce. Additionally the federal deficit has ballooned.
Another long period of malaise? We certainly have a “Crisis of Confidence.”